

#import <Foundation/Foundation.h>
#import "WZWeather.h"
@interface WZFileTool : NSObject
+(void)writeWeatherToFile:(WZWeather *)weather withCity:(NSString *)city;
+(WZWeather *)readWeatherFromFileWithCity:(NSString *)city;
+(void)writeCitysToFile:(NSMutableArray *)citys;
+(NSMutableArray *)readCitysFromFile;
@end
